Enoch farnsworth



(No Model.)

B. FARNSWORTH.

SASH BALANCE.

Patented July 8, 1890.

114E mums ravens 420., more-mum, msnmcncu, u. c

UNITED STATES PAT NT OFFICE.

ENOGI-I FARNSl/VORTH, OF UTAHVILLE, PENNSYLVANIA.

SASH-BALANCE.

SPECIFICATION forming part of Letters Patent No; 431,653, dated July 8, 1890.

I Application filed January '7, 1890. Serial No. 336,162. (No model.)

To all whom it may concern.-

Be it known that I, ENocH FARNSWORTH, a citizen of the United States, residing at Utahville, in the county of Clearfield and State of Pennsylvania, have invented certain new and useful Improvements in Sash-Balances; and I do hereby declare the following to be a full,

' clear, and exact description of the invention,

such as will enable others skilled in the art to which it appertains to make and use the same. My invention relates to an improvement in sash-balances; and the object of the invention is to enable the sashes to be adjusted so that ready access can be had thereto for washing the window-panes, to enable the upper sash to be lowered or raised without affecting or changing the position of the lower sash, and to provide for positively holding the upper sash in its adjusted position and at the same time so adapt and combine the two sashes that they balance each other.

Vith these and other objects in view, my invention consists of the combination of two sashes which are fitted to slide freely in suitable guides in the window-frame, pulleys or guide-rollers journaled at the upper sides of the frame, and cords or chains which run over said guide-pulleys or rollers and are secured permanently to the upper sash and adj ustably secured in a peculiar manner to the lower sash.- The upper ends of the cords or chains are fitted in longitudinal grooves or channels formed in the stiles of the upper sash for a suitable distance below the upper edge thereof, the cords or chains being secured at the lower extremities of the grooves or channels so that the upper sash can be lowered the full limit to permit ready access thereto for washing the window-panes, and at the same time the lower sash is raised out of the way. To the stiles of the lower sash, on opposite sides thereof, are arranged vertical rods, which are fixed to the lower sash and arranged out of lateral contact therewith, and on these rods are fitted friction-clamps to which the lower ends of the cords or ropes are connected. These friction-clamps extend or project outward from the rods, and they are normally turned at a slight angle to the rod under the weight of the upper sash, so that said clamps bite or impinge on the rods and thereby hold themselves in position on the rods, and the cords thus serve to suspend the upper sash while at the same time the two sashes balance each other. When it is desired to lower the upper sash without affecting or changing the position of the lower sash, the operator lifts the friction-clamps and slides them freely over the fixed rods, and the upper sash lowers or drops by gravity a distance equal to the elevation of the 'friction-clamps on the rods, and when said clamps are released at 'a point intermediate of the length of the rods, the weight of the upper sash operates the clamps to bite on the rods, so that the upper sash is held at the desired elevation and the two sashes are evenly bal anced. The two sashes can be readily operated by merely lifting the lower sash, if desired. By providing the two sets of cords or chains, the pulleys and the rods and friction clamps, which are arranged on opposite sides of the window-frame, the two sashes are more equally hung, so that they are not liable to become misshapen after they are hung for some time, and the parts present a neat ap- Figure 1 is a front elevation of a window constructed in accordance with my invention. Fig. 2 is a vertical transverse sectional view thereof. Fig. 3 is an enlarged perspective View of one of the rods and the frictionclamp fitted loosely thereon.

Referring to the drawings, in which like numerals of reference denote corresponding parts in all the figures, 1 designates the upper sash and 2 the lower sash, which are fitted within an ordinary frame 3, and between the usual guide-strips l, to slide freely in vertical planes in said frame. At the upper part of the casing or frame 8, on the sides thereof, are arranged groovedguide-pulleys or rollers 5 6, which are loosely mounted on fixed pins 7 to turn freely thereon, and over these guidepulleys pass the cords or chains 8 9, which are connected to the upper ends of the two sashes. The upper sash 1. is provided with longitudinal grooves 10, which extend from the upper edge of the sash to suitable points below said edge, and in these grooves are arranged the upper extremities of the sash cords or chains, the end of each cord or chain being suitably secured at the lower terminal of the groove in which said cord is fitted.

To the lower sash are secured two vertical rods 11 12, which are arranged at the sides of the sash and are provided with outwardlyextending arms 13, which are fixed in the vertical stiles of the sash, said rods being arranged close to the sides of the window-casing, but out of lateral contact with said casing and the stiles of the sash 2, to which said rods are secured. On these fixed vertical rods I arrange the friction-clamps 14 15, each of which is fitted loosely on one of the vertical rods and is capable of a slight angular play thereon, so that the clamp can bite or impinge on the rod and hold itself firmly thereon. .These clamps extend or project outwardly from the rods, and they are provided with eyes 16, to which the lower extremities of the sash cords or chains are secured, whereby the two sashes are connected together so as to balance each other, and the sashes can be raised or lowered by merely loosening the friction-clamps on the rods so that the clamps can slide freely over the rods.

The operation of my invention is simple and readily understood from the drawings. When the two sashes are closed the sashcords or chains are drawn to their full length and the friction-clamps bind on the rods at the lower ends thereof. To lower the upper sash it is only necessary to depress the clamps slightly to release them from the rods, and the clamps can now be elevated freely on the rods, as the weight of the upper sash causes it to descend and raise the clamps, which lo\ ering of the upper sash is thus accomplished without raising the lower sash, and the upper sash can be held at any desired elevation by allowing the clamps to impinge on the rods at the desired points thereon. hen the lower sash is raised the upper sash is lowered a corresponding distance, and the two sashes are balanced atany point of adjustment thereof.

By providing the duplicate rods, clamps, and cords, and arranging the same on opposite sides of the sashes, the latter are more equally hung and the parts present a neat appearance.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

In a sash-balance, the combination of the upper and lower sashes, the vertical rods fixed to the sides of the lower sash, the triotion-clamps fitted loosely on said rods and extending outwardly therefrom, to be capable of a limited angular play thereon to adapt the clamps to bind said rods, the guide-rollers arranged on the sides of the casing, and the cords or chains arranged over said rollers and secured at one end to the upper sash and at their other ends to the friction-clamps, substantially as and for the purpose described.

In testimony whereof I affix my signature in presence of two witnesses.

ENOCH FARNSWORTH.

Witnesses: V. STEVENS, 

